Sentences with phrase «when blood vessels»

Ischemic strokes occur when blood vessels supplying the brain are blocked.

Cephalohematomas occur when the blood vessels on an infant's head are damaged.

Also unique is that owls have «backup arteries» which, as National Geographic explains, «offer a fresh supply of nutrients when blood vessels get closed off by rapid turning.

When the blood vessels or nerve endings are detected, the red light will illuminate.

Behavioural strategies could include seeking shade in warm weather or getting close to another dog or human in cold weather, physiological strategies include shivering, panting or vasodilation (bringing blood from the core of the body to the skin where it can be cooled) / vasoconstriction (when blood vessels near the surface of the skin narrow to direct blood back to the core), whilst anatomical strategies include having fur or body fat.

Hot flashes occur when blood vessels near the skin's surface dilate to cool, producing a red flushed look to the skin.

Headaches can also result when the blood vessels of the head and neck clamp down too hard (constriction) or open up too wide (dilation).

High blood pressure happens when an excess of fluid is pumped through the blood vessels or when the blood vessels

When the blood vessels aren't able to expand with increased blood flow, blood pressure increases.

Your nose gets stuffed up when blood vessels in the tissues lining your nose become inflamed.

In an age when blood vessels were still thought to carry air, they needed to open living bodies to their scientific scrutiny.

When these blood vessels leak, the retina in the back of the eye swells and makes it difficult for the eye to receive light correctly.

Coronary artery disease — which occurs when the blood vessels to the heart narrow or harden — is the most common form of heart disease.

Peripheral obstructive arterial disease develops when blood vessels narrow due to arteriosclerosis and blood flow in the legs (or rarely the arms) becomes clogged.

«Most importantly, they lowered their glucose levels below the threshold of 100 milligrams per deciliter when blood vessels start to become unhealthy.»

Garzon - Muvdi explains that when blood vessels break anywhere but the brain, the body's immune cells easily clear the blood cells and their remnants from the area.

But such grafts are often difficult to harvest, leave deep wounds behind and fail when blood vessels can't snake through the thick tissue.

2 Retinal screening with a digital camera is used to spot signs of retinopathy, a diabetic complication that occurs when blood vessels in the retina of the eye become blocked, leaky or grow haphazardly.

Vasospasm happens when blood vessels tighten and go into spasm, so that blood does not flow normally.

They occur when the blood vessels under the skin bleed, thus leaking blood into the skin — this could be due to:

Vascular is the type that can be dangerous, they occur when the blood vessels don't form correctly.

This complication is called diabetic retinopathy (DR), when blood vessels are progressively damaged in the retina.

Genetic deficiencies can cause lowered plasma clotting factor activity so as to compromise blood - clotting; when a blood vessel is injured, a scab will not form and the vessel can continue to bleed excessively for a very long period of time.

The rest are hemorrhagic strokes, basically a brain bleed that occurs when a blood vessel breaks.

Problems from high blood pressure arise when a blood vessel is simply too small for the high pressure flow going through it.

Problems from high blood pressure arise when a blood vessel gets too small for the high pressure flow going through it.

A stroke occurs when a blood clot blocks an artery or blood vessel in the brain or when a blood vessel breaks thereby interrupting the blood flow to an area of the brain.

Or when a blood vessel in or around your brain ruptures.

Not exact matches

One of [the whale's] peculiarities it is, to have an entire non-valvular structure of the blood - vessels, so that when pierced even by so small a point as a harpoon, a deadly drain is at once begun upon his whole arterial system; and when this is heightened by the extraordinary pressure of water at a great distance below the surface, his life may be said to pour from him in incessant streams.

The most common birthmark which occurs when a group of blood vessels grow very rapidly in a certain area of the body.

The cause would seem to be a spasm of the blood vessels in the nipple (when the nipple is white), followed by relaxation of these blood vessels (when the nipple returns to its normal colour).

This slows circulation and when blood and lymph move through the breasts, fluid from the blood vessels can seep into the breast tissues.

Our daughter had lost a tremendous amount of blood from the exposed blood vessels rupturing when my water broke.

I remembered nursing her in those early days, when her eyelids were still translucent, tiny blood vessels visible.

The dilation of blood vessels in the skin of your feet and hands when heat from the rest of your body goes to your hands and feet cools down the body and helps with the onset of sleep.

When there is an increase in blood circulation at the time of pregnancy, the blood vessels may branch outwards and appear abnormal.

When the embryo implants in the uterus, it can intrude on the tiny blood vessels in the spot that it attaches to.

It's not entirely clear what the connection exactly is, but some studies have shown the blood vessels in the head may narrow when attempting to regulate fluids.

When you are pregnant, your blood vessels may become more wide, and they also may be more relaxed.

Most pregnant women suffer from hemorrhoids during the second and third trimester, when the fetus puts a lot of pressure on the abdomen and hormonal changes cause hemorrhoidal blood vessels to swell.

But there is less inflammation of the blood vessels and a different ratio of stress hormones when you have a «challenge» response compared to a «threat» one.

It occurs when some of the red blood cells change into a «sickle» shape and cause a buildup of red blood cells in small blood vessels.

Patent ductus arteriosus (PDA), a heart defect that occurs in premature babies when ductus arteriosus, a blood vessel that connects the pulmonary artery and the aorta in the fetus, doesn't close after birth.

When a mammal holds its breath and dives, the body responds by slowing the heart rate, constricting blood vessels in the extremities and contracting the spleen to release stored oxygenated red blood cells.

IDx - DR studied over 1 million eye images to learn how to recognize symptoms of diabetic retinopathy, a condition that develops when high blood sugar damages retinal blood vessels (SN Online: 6/29/10).

When the modified cells were injected into mice whose hind limbs had been injured, the tissue that regrew to repair the damage had three times the blood vessel density of similar tissue in mice given unmodified cells.

When driven by motors specifically engaged for this function, it is tough enough to push through the barrier imposed by the blood vessel walls.

VOC occurs when the misshapen, sickled red blood cells block blood flow in the blood vessels.

New bone forms to fill in the gaps, and — when the stretching is done gradually — the blood vessels, muscles, nerves, and tendons keep pace.

At first, when the researchers set the MRI to see blood vessels, the dura lit up brightly, and they could not see any signs of the lymphatic system.